rtc: fsl-ftm-alarm: add shutdown interface

[Biwen Li]

From: Biwen Li <biwen.li@xxxxxxx>

Add shutdown interface

Signed-off-by: Biwen Li <biwen.li@xxxxxxx>
---
 drivers/rtc/rtc-fsl-ftm-alarm.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/rtc/rtc-fsl-ftm-alarm.c b/drivers/rtc/rtc-fsl-ftm-alarm.c
index d7fa6c16f47b..118a775e8316 100644
--- a/drivers/rtc/rtc-fsl-ftm-alarm.c
+++ b/drivers/rtc/rtc-fsl-ftm-alarm.c
@@ -307,6 +307,15 @@ static int ftm_rtc_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static void ftm_rtc_shutdown(struct platform_device *pdev)
+{
+	struct ftm_rtc *rtc = platform_get_drvdata(pdev);
+
+	ftm_irq_acknowledge(rtc);
+	ftm_irq_disable(rtc);
+	ftm_clean_alarm(rtc);
+}
+
 static const struct of_device_id ftm_rtc_match[] = {
 	{ .compatible = "fsl,ls1012a-ftm-alarm", },
 	{ .compatible = "fsl,ls1021a-ftm-alarm", },
@@ -321,6 +330,7 @@ static const struct of_device_id ftm_rtc_match[] = {
 
 static struct platform_driver ftm_rtc_driver = {
 	.probe		= ftm_rtc_probe,
+	.shutdown	= ftm_rtc_shutdown,
 	.driver		= {
 		.name	= "ftm-alarm",
 		.of_match_table = ftm_rtc_match,
-- 
2.17.1